Munatia Plancina

Munatia Plancina (died 33 AD) was the wife of the Roman governor of Syria Gnaeus Calpurnius Piso. In 20 AD, she was acquitted of her role in the murder of Germanicus, while her husband was convicted and committed suicide, but she committed suicide when Emperor Tiberius had the case retried in 33 AD, after Munatia's protectress Livia had died.

Biography
Munatia Plancina was the daughter of Tiberius' comes Munatius, and she was the granddaughter of consul Lucius Munatius Plancus. She was a wealthy woman who was self-confident due to her nobility, and she married the Roman politician Gnaeus Calpurnius Piso, who was sent to Roman Syria in 17 AD to serve as governor. In 19 AD, Plancina and Piso were responsible for the murder of the legate Germanicus on Tiberius' orders, but Germanicus' wife Agrippina the Elder discovered her husband's poisoning and, with the help of Publius Vitellius the Younger and Drusus Julius Caesar, Agrippina had the case tried before the Roman Senate. Despite overwhelming evidence against Plancina, Empress Livia was able to secure her acquittal, although Piso was found guilty and committed suicide. After the death of Livia, Tiberius renewed the murder charge against Livia in 33 AD. Without the protection of Empress Livia, who had died a few years earlier, Plancina did not stand a chance at the next trial, and she committed suicide before the judgement.